한국신뢰성학회지:신뢰성응용연구 (Journal of Applied Reliability)

  • 제17권4호
  • /
  • Pages.316-324
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  • 2017
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  • 1738-9895(pISSN)
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  • 2733-8320(eISSN)
한국신뢰성학회 (The Korean Reliability Society)
권호 표지

철도차량 접촉기의 신뢰성 분석 및 교환주기 결정에 대한 연구

A Study on Reliability Analysis & Determination of Replacement Cycle of the Railway Vehicle Contactor

  • 투고 : 2017.08.18
  • 심사 : 2017.09.28
  • 발행 : 2017.12.25
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초록

Purpose: The purpose of this study is to determine the replacement cycle applied age replacement policy by reliability analysis based on railway vehicle contactor's failure history data. Method: We performed reliability analysis based on railway vehicle contactor's failure history data. We found a suitable distribution by goodness of fit test and predicted the reliability through estimation of scale & shape parameter. Considering cost information we determined the replacement cycle that minimize the opportunity cost. Result: Suitable distribution was the Weibull and scale parameter & shape parameter are estimated by reliability analysis. The replacement cycle was predicted and MTTF, $B_6$ percentile life were suggested additionally. Conclusion: We confirmed that failure rate type of railway vehicle contactor is degradation model having a time dependent characteristic and examined the replacement cycle in our country's operating environment. We expect that this study result contribute to railway operation agency for maintenance policy decision.

키워드

참고문헌

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